Metal deforming – Process – Involving use of claimed apparatus
Patent
1984-07-31
1985-07-16
Larson, Lowell A.
Metal deforming
Process
Involving use of claimed apparatus
72377, 72412, B21J 512
Patent
active
045288364
ABSTRACT:
A cold metal working process gradually changes the cross-section of a copper band to a wider band having one or more sections of reduced thickness. A hammering tool having a chevron-like protrusion, formed by two convergent elongate ridges with long and narrow flat crests, performs a succession of elemental hammered compressions on the band. The metal band, between blows of the hammering tool, is advanced toward the wider part of the chevron-like protrusion and enables the reduced thickness section to be progressively widened by hammering, with the long flat crests of the two ridges, on narrow strips of the portions of the band adjacent to the reduced thickness section. The material displaced from the hammered indentation at each elemental compression of the narrow strip is displaced substantially laterally and results in a widening of the band without an appreciable increase in the initial thickness of the other portions of the band's cross-section.
REFERENCES:
patent: 2371671 (1945-03-01), Blount et al.
patent: 3792602 (1974-02-01), Fukuda
patent: 4407056 (1983-10-01), Watanabe et al.
Larson Lowell A.
Orenbuch Louis
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